Meanwell DDR-120 Series User manual

Installation Manual
Type：DDR DIN rail power supply（Series：DDR-120）
DDR-120A-12 INPUT: 9~18VDC 13.5A OUTPUT: 12V 7.1A (9~10.8Vin)
12V 8.3A (10.8~18Vin)
DDR-120A-24 INPUT: 9~18VDC 13.5A OUTPUT: 24V 3.6A (9~10.8Vin)
24V 4.2A (10.8~18Vin)
DDR-120A-48 INPUT: 9~18VDC 13.5A OUTPUT: 48V 1.8A (9~10.8Vin)
48V 2.1A (10.8~18Vin)
DDR-120B-12 INPUT: 16.8~33.6VDC 9A OUTPUT: 12V 9A (16.8~21.6Vin)
12V 10A (21.6~33.6Vin)
DDR-120B-24 INPUT: 16.8~33.6VDC 9A OUTPUT: 24V 4.5A (16.8~21.6Vin)
24V 5A (21.6~33.6Vin)
DDR-120B-48 INPUT: 16.8~33.6VDC 9A OUTPUT: 48V 2.3A (16.8~21.6Vin)
48V 2.5A (21.6~33.6Vin)
DDR-120C-12 INPUT: 33.6~67.2VDC 4.5A OUTPUT: 12V 9A (33.6~43.2Vin)
12V 10A (43.2~67.2Vin)
DDR-120C-24 INPUT: 33.6~67.2VDC 4.5A OUTPUT: 24V 4.5A (33.6~43.2Vin)
24V 5A (43.2~67.2Vin)
DDR-120C-48 INPUT: 33.6~67.2VDC 4.5A OUTPUT: 48V 2.3A (33.6~43.2Vin)
48V 2.5A (43.2~67.2Vin)
DDR-120D-12 INPUT: 67.2~154VDC 2.5A OUTPUT: 12V 9A (67.2~86.4Vin)
12V 10A (86.4~154Vin)
DDR-120D-24 INPUT: 67.2~154VDC 2.5A OUTPUT: 24V 4.5A (67.2~86.4Vin)
24V 5A (86.4~154Vin)
DDR-120D-48 INPUT: 67.2~154VDC 2.5A OUTPUT: 48V 2.3A (67.2~86.4Vin)
48V 2.5A (86.4~154Vin)
Introduction
DDR series is a DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ultra
slim width, 2:1 wide input voltage, fanless design, -40~+70℃wide operating temperature, 150% peak load,
adjustable output voltage and full protective functions.
This series of models has various input options: 9~18V / 16.8~33.6V / 33.6~67.2V / 67.2~154V and various output
options: 12V / 24V / 48V and can be used for industrial & railway control, security control, communication system
and other fields. Suitable applications include DC buck/boost regulator, increasing system insulation level and
voltage drop compensation along cable...etc.

Installation Manual
Installation
（1）Always allow good ventilation clearances, 5mm left and right, 40mm above and 20mm below, around the unit
in use to prevent it from overheating. Also a 10-15 cm clearance must be kept when the adjacent device is a
heat source.
（2）The appropriate mounting orientation for the unit is vertical, the input terminals at the bottom and output on
the top. Mounting orientations other than that, such as upside down, horizontal, or table-top mounting, is not
allowed.
（3）Use copper wire only, and recommended wires are shown as below.
AWG 18 16 14 12 10
Rated Current of
Equipment (Amp) 7A 10A 15A 20A 30A
Cross-section of
Lead(mm2) 0.8 1.3 2.1 3.3 5.3
Note: 1. Current each wire carries should be de-rated to 80% of the current suggested
above when using 5 or more wires connected to the unit.
2. The maximum allowable wire cross-sectional area for the terminal of the
SDR-75 is 12AWG/2.5 mm2 .
Make sure that all strands of each stranded wire enter the terminal connection and the screw terminals are
securely fixed to prevent poor contact. If the power supply possesses multi-output terminals, please make
sure each contact is connected to wires to prevent too much current stress on a single contact.
（4）Use wires that can withstand temperatures of at least 80°C, such as UL1007.
（5）Recommended wire strapping length is 5mm (0.197”).
（6）Recommended screwdriver is 4mm, slotted type.
（7）The recommended torque setting for terminals is shown as below.
Model I/P O/P
DDR-120 6.9 kgf-cm (6 Lb-in) 6.9 kgf-cm (6 Lb-in)
（8）Suggested fuse is shown as below.
Model Fuse
DDR-120A T10A/L250V x2
DDR-120B T8A/L250V x2
DDR-120C T8A/L250V x1
DDR-120D T4A/L250V x1

Installation Manual
3
12
4
（9）Mounting Instruction：
Mount as shown in figure only, with input terminals down, or else sufficient cooling will not be possible.
Admissible DIN rail：TS35/7.5 or TS35/15
For rail fastening：
（a）Tilt the unit slightly rearwards.
（b）Fit the unit over top hat rail.
（c）Slide it downward until it hits the stop.
（d）Press against the bottom for locking.
（e）Shake the unit slightly to check the locking action.
（10）For other information about the products, please refer to www.meanwell.com for details.
Warning / Caution !!
（1）Risk of electrical shock and energy hazard. All failure should be examined by a qualified technician. Please do
not remove the case of the power supply by yourself!
（2）Risk of electric arcs and electric shock (danger to life). Connecting both the primary and the secondary sides
together is not allowed.
（3）Risk of burn hazard. Do not touch the unit in operation and shortly after disconnection!
（4）Risk of fire and short circuit. The openings should be protected from foreign objects or dripping liquids.
（5）Only install the unit in a pollution degree 2 environment (Note.1).
（6）Please do not install the unit in places with high moisture or near the water.
（7）The maximum operating temperature is 55°C for DDR-120 series, please do not install the unit in places with
high ambient temperature or near fire source.
（8）The FG ( ) must be connected to PE (Protective Earth).
（9）Output current and output wattage must not exceed the rated value on its specification.
（10）SDR-960 is a class A product. In a domestic environment this product may cause radio interference in which
case the user may be required to take adequate measures.
（11）Disconnect system from supply voltage:
Before commencing any installation, maintenance or modification work: Disconnect your system from
supply voltage. Make sure that inadvertent connection in circuit will be impossible!
（12）For continued protection against risk of fire, replace only with same type and rating of fuse.
Pour ne pas compromettre la protection contre les risqué d’incendie, remplacer par un fusible de même
type et de memes caractéristiques nominales.
Note.1: Pollution Degree 2 applies where there is only non-conductive pollution that might temporarily become
conductive due to occasional condensation. Generally refer to dry, well-ventilated locations, such as
control cabinets.
"Click"

Installation Manual
Manufacturer：
MEAN WELL ENTERPRISES Co., LTD.
No.28, Wuquan 3rd Rd., Wugu Dist.,
New Taipei City 24891, Taiwan
Tel: [phone]
Web: www.meanwell.com
Branch Office：
China
MEAN WELL (GUANGZHOU)
ENTERPRISES Co., LTD.
2F, A Building, Yuean lndustry Park,
Huangcun,Dongpu Yown, Tianhe
District, Gungzhou, China
Post Code:510660
Tel: [phone]
Web: www.meanwell.com.cn
U.S.A.
MEAN WELL USA, INC.
44030 Fremont Blvd., Fremont,
CA 94538, U.S.A.
Tel: [phone]
Web: www.meanwellusa.com
Europe
MEAN WELL EUROPE B.V.
Langs de Werf 8, 1185XT
Amstelveen, The Netherlands
Tel: [phone]
Web: www.meanwell.eu

Declaration of China RoHS Conformity
In order to reduce the impacts on the environment and take the more responsibility for protecting the
earth, MEAN WELL is confirming and announcing the conformity to China RoHS, an
Administrative Measures for the Restriction of the Use of Hazardous Substances in Electrical and
Electronic Products.
Environment Friendly Use Period Label
Observing SJT 11364-2014, Marking for the Restricted Use of Hazardous
Substances in Electronic and Electrical Products
Observing SJ/Z 11388-2009, General Guidelines of Environment-friendly
Use Period of Electronic Information ProductsAppendix B, adopting
table look-up to verify the Environment Friendly Use Period
Names and Contents of Hazardous Substances Lists
Part Name
Hazardous Substances
Lead
(Pb)
Mercury
(Hg)
Cadmium
(Cd)
Hexavalent
chromium
(Cr6+)
Polybrominated
biphenyls
(PBB)
Polybrominated
diphenyl ethers
(PBDE)
PCB and its
components
X
O
X
O
O
O
Metal structure
parts
X
O
O
O
O
O
Plastic structure
parts
O
O
O
O
O
O
Accessories
O
O
O
O
O
O
Cables
X
O
O
O
O
O
O: The concentration of the hazardous substances within the homogeneous material of that product is less than
the concentration limits set by GB/T 26572-2011.
X: The concentration of the hazardous substances within the homogeneous material of that product is over the
concentration limits set by GB/T 26572-2011; however, it follows the standard advised by 2011/65/EU.